Given that -4<= n <=3 and -1<= m <=7, where n and m are integers, find the least possible value of (nm+n^2).
Well, you see the problem is that i just wanted to know that when i take values for n for the 'nm' part and the 'n^2' part, are they equal values or different values?
(I assumed they should be equal values but apparently my teacher thought otherwise!!)
2007-05-01 19:11:38 · 2 answers · asked by paulscoles b 1 in Science & Mathematics ➔ Mathematics
If you mean that your teacher said the answer is -28, because (-4)(7)-0^2 is -28, then your teacher is confused about how Algebra is generally practiced. n should be the same, so, in my example, you'd get (-4)(7)-(-4)^2 = -12, because you've picked an n.
I leave the caveat that I have no idea what your teacher taught you, and without context, one can't be sure of who's "right," but generally algebraic practice sides with you, if you described your position correctly.
2007-05-01 19:20:19 · answer #1 · answered by Elliot M 2 · 0⤊ 0⤋
Maybe your teacher misunderstood you. certainly, the n that is used in the first term of the expression should be the same n as in the second term.
PS, the least possible value appears to be -12. If n=-4 and m=7, you get -12. But so does the combination of n=-3 and m=7. Maybe this is what he meant.
2007-05-01 19:22:47 · answer #2 · answered by cattbarf 7 · 0⤊ 0⤋